Indexhibit Support

I am new to Indexhibit and after getting along well I am facing some obstacles:
How do I hide an exhibit from the index in order to make it accessable only via an other exhibit? I have tried to costumize the exhibit: exhibit options > page options > hide from index > on. But then the exhibit demands a password?
audiblearchitecture.com
Thanks a lot!

Problem solved - sorry. I falsely copied the link for the exhibit from the preview while editing the exhibit, which led into my indexhibit account, of course...!